IPA: /ˈdeɪndʒərəsli/
KK: /ˈdeɪndʒərəsli/
In a way that is likely to cause harm or injury.
He drove dangerously fast on the wet road.
Dangerously → It is formed from "danger" (from Old French *dangier*, meaning to be able to harm or to put at risk) and the suffix "-ously" (meaning in a manner characterized by). The word "dangerously" means in a manner that is characterized by risk or harm.
Think of the word 'danger' which relates to risk, and remember that 'dangerously' describes doing something in a way that involves that risk.